need some suggestion

i have a login page that takes up the whole screen space. on successful login I show a html page with frames.

RHS frame is links.jsp. LHS is a blank page. Whenever you click a link on links.jsp the corresponding page displays in the LHS frame.

Now when in my action classes i check for user in session...if his session expires..I redirect him to Login page. But I see that it displays the Login page inside the LHS frame exposing all the links on RHS frame...which the user is not supposed to see. Here is my forward...